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标题: VOA慢速英语2015.08.25 [打印本页]

作者: Rebecca949    时间: 2015-8-26 08:21     标题: VOA慢速英语2015.08.25

[audio]http://sound.yywz123.com/tingbbs/voa/voa20150825.mp3[/audio]



But he says there is a problem. He says many wild versions of farmed plants are disappearing. He says they are threatened and scientists have not collected their seeds for future use._____________________但他说还有一个问题.许多植物的野生种品种正在消失.它们濒临绝种,科学家们没有采集到供未来使用的种子.________________________




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作者: zzb    时间: 2015-8-27 14:19

bu dong




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